A 0-360° phase shifter for 77-GHz automotive radar sensors in 28-nm FD-SOI CMOS technology

This paper presents a phase shifter in a 28-nm FD-SOI CMOS technology, which is suitable for automotive radar sensor applications in the 75-81 GHz band. The circuit exploits a switching vector modulator solution, which allows high phase accuracy to be achieved. Indeed, RMS phase and gain errors are as low as 2.2° and 0.14 dB, respectively. This performance is provided with a 1-V supply voltage and a low power consumption of 9 mW.